CN106892834B - A kind of lithium salt compound and preparation method thereof - Google Patents
A kind of lithium salt compound and preparation method thereof Download PDFInfo
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- CN106892834B CN106892834B CN201710146716.6A CN201710146716A CN106892834B CN 106892834 B CN106892834 B CN 106892834B CN 201710146716 A CN201710146716 A CN 201710146716A CN 106892834 B CN106892834 B CN 106892834B
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/02—Preparation of carboxylic acid amides from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
- C23F11/14—Nitrogen-containing compounds
- C23F11/145—Amides; N-substituted amides
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/12—Preparation of carboxylic acid amides by reactions not involving the formation of carboxamide groups
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C233/00—Carboxylic acid amides
- C07C233/01—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
- C07C233/16—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms
- C07C233/17—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom
- C07C233/20—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by an acyclic carbon atom having the carbon atom of the carboxamide group bound to a carbon atom of an acyclic unsaturated carbon skeleton
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M133/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen
- C10M133/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing nitrogen having a carbon chain of less than 30 atoms
- C10M133/16—Amides; Imides
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/20—Metal working
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Lubricants (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention belongs to the field of metal processing more particularly to a kind of lithium salt compound and preparation method thereof.It is to pass through acid compounds the invention discloses a kind of lithium salt compound, diethanol amine, what Lithium hydroxide monohydrate reacted, the technological deficiency that the present invention solves the metal working fluid of the prior art not environmentally and rust-preventing characteristic, extreme pressure property are bad, the lithium salt compound of offer not phosphorus element-containing, it not will cause water eutrophication, reduce user because of wastewater treatment bring cost；Moreover, the compound of the present invention pH be 8~9, within the scope of this pH, most of bacterium is not easy to increase, and can extend service life of the invention, it is thus also avoided that because pH it is too low caused by human injury and machine etching problem；Meanwhile the present invention has good rust-preventing characteristic and extreme pressure property on the basis of environmental protection.
Description
Technical field
The invention belongs to the field of metal processing more particularly to a kind of lithium salt compound and preparation method thereof.
Background technique
Extreme pressure agent refers to the heavy duty for forming extreme boundary lubrication film with surface of friction pair under the extreme harsh conditions such as high temperature, high pressure
Lotus additive, cutting, forming for difficult-to-machine material, is also used for various steel, the harsh processing technology of iron is such as drilled, attacked
Silk, cold-heading, drawing etc..
Usually used extreme pressure agent can be divided into following two according to its membrane formation mechanism: can directly send out with base metal surface
Biochemical reaction generates reaction film, these compounds are main are as follows: sulfur-bearing (such as sulfide aliphatic acid ester) or containing chlorine (such as alkyl chloride)
Compound, active organic ester, metal sulfide, metal chloride etc., in addition phosphorus-containing compound (such as phosphide) is also often used.
It can be seen that traditional extreme pressure agent contains phosphorus, sulphur, chlorine element mostly, therefore is easy pollution environment, can be made when serious
At water pollution, meanwhile, traditional extreme pressure agent only has extreme pressure property mostly, without antirust ability, therefore in processing metal material
When can corrode metal, influence intermetallic composite coating quality.
Therefore, develop it is a kind of environmental protection and the good extreme pressure agent of antirust, extreme pressure property become those skilled in the art urgently
Problem to be solved.
Summary of the invention
In view of this, the present invention provides a kind of lithium salt compound and preparation method thereof, for solving prior art extreme pressure
Agent is not environmentally and the bad technological deficiency of rust-preventing characteristic.The present invention provides a kind of lithium salt compound, the change of the lithium salt compound
It is as follows to learn structure shown in logical formula (I) or (II):
Wherein, n is the integer of 6-12.
Preferably, the n is 8.
The present invention also provides a kind of methods for preparing the lithium salt compound, comprising the following steps:
Acid compounds are reacted with diethanol amine, obtain product one by step 1；The acid compounds are ten alkenyl succinates
Acid anhydrides, hendecene base succinic anhydride, dodecenylsuccinic anhydride, tridecylene base succinic anhydride, tetradecene base succinic anhydride, 15
Alkenyl succinic anhydride, hexadecylene base succinic anhydride, ten alkenyl succinic acids, hendecene base succinic acid, dodecenyl-succinic acid, 13
One of alkenyl succinic acid, tetradecene base succinic acid, 15 alkenyl succinic acids, hexadecylene base succinic acid；
Lithium hydroxide monohydrate is reacted with product one, obtains lithium salt compound by step 2.
Preferably, by weight, the acid compounds are 50-65 parts；Diethanol amine is 25-35 parts；One water hydrogen
Lithia is 10-15 parts.
Preferably, the acid compounds are dodecenylsuccinic anhydride.
Preferably, the step 1 can add catalyst when reacting, by weight, the catalyst is 0.5-2.5 parts.
Preferably, the catalyst is selected from one or both of hexahydropyridine, diethylenetriamine；The catalyst is hexahydro
When pyridine and diethylenetriamine, hexahydropyridine and diethylenetriamine mass ratio are 1:(0.8-1).
Preferably, the catalyst is hexahydropyridine and diethylenetriamine mass ratio is 1:1 mixture.
Preferably, the step 1 reaction temperature control is at 90-110 DEG C.
Preferably, reaction temperature is 50-65 DEG C in the step 2, the reaction time is 2-3 hours.
Preferably, the acid value of product one is 140-170mg KOH/g, the acid of the lithium salt compound in the step 1
Value is 0~10mg KOH/g.
Further, application of the lithium salt compound provided by the invention in intermetallic composite coating.
Further, reaction equation is as follows, and wherein n is the integer of 6-12；
Contain lithium base in compound disclosed by the invention, impart the excellent mechanical stability of the compound, increases lithium salts
The rust-preventing characteristic of compound, and the length of alkyl also has a certain impact to rust-preventing characteristic.The present invention is as extreme pressure agent, in high temperature
Under, not with metal reaction, itself special structure solves the extreme pressure agent of the prior art not environmentally and rust-preventing characteristic, extreme pressure property
Bad technological deficiency, lithium salt compound provided by the invention is phosphorous, sulphur, chlorine element, not will cause water eutrophication, subtracts
Few user is because of wastewater treatment bring cost；Moreover, the compound of the present invention pH is 8~9, it is most of thin within the scope of this pH
Bacterium is not easy to increase, and can extend the service life of extreme pressure agent, it is thus also avoided that because pH it is too low caused by human injury and machine corrosion ask
Topic；Meanwhile lithium salt compound provided by the invention also has good rust-preventing characteristic and extreme pressure property on the basis of environmental protection.
Specific embodiment
The present invention provides a kind of lithium salt compound and preparation method thereof, for solving prior art extreme pressure agent not environmentally and
The bad technological deficiency of rust-preventing characteristic.
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
In order to which the present invention is described in more detail, below with reference to embodiment to a kind of lithium salt compound provided by the invention and its system
Preparation Method is specifically described.
Acid value detection method: " measurement of GB/T 6365-2006 surfactant free alkalinity or free acidity titrates
Method ".
Alkenyl succinic anhydride is bought from Fan Telusi company, the U.S. or BASF Aktiengesellschaft；Other reagents are commercially available.
Embodiment 1
1), 50 parts by weight dodecenylsuccinic anhydrides are put into preheat in the 100L stainless steel cauldron of heating stirring and are risen
Temperature is to 80 DEG C；
2), the catalyst A of 1 parts by weight (mixture that hexahydropyridine and diethylenetriamine mass ratio are 1:1) is put into
It is uniformly mixed in preheated good reaction kettle；
3) it, by 35 parts by weight diethanol amine, slowly puts into reaction kettle and is reacted, feed intake process control flow velocity, and preceding 5
The diethanol amine of minute 17.5 parts by weight of investment, reaction temperature are promoted between 100-105 DEG C, then material inlet valve are turned down, remained
17.5 parts by weight coutroi velocities of remaininging flow slowly into reaction kettle in 0.5 parts by weight/min, and reaction temperature controls the heat preservation at 103 DEG C
Reaction 1 hour；
4), by reaction kettle substance titration do acid value detection, to acid value twice after 10 minutes no longer decline until.Acid value
In 153mgKOH/g, start to reduce system temperature to 50 DEG C；
5), 15 parts by weight Lithium hydroxide monohydrates are slowly put into the reaction kettle of high-speed stirred and is reacted, control temperature exists
50-65 DEG C, reaction 2-3 hours is kept, detection architecture acid value is less than 5mgKOH/g to acid value and no longer declined after 10 minutes,
It can determine whether reaction end；
6), directly discharging is dodecenyl-succinic acid diglycollic amide lithium salts.
Embodiment 2
1) 65 parts by weight dodecenyl-succinic acids, are put into pre-heating temperature elevation in the 100L stainless steel cauldron of heating stirring
To 80 degree；
2), the catalyst A of 2.5 parts by weight (mixture that hexahydropyridine is 1:1 with diethylenetriamine mass ratio) is put into
It is uniformly mixed in the reaction kettle having had been warmed up；
3) it, by 35 parts by weight diethanol amine, slowly puts into reaction kettle and is reacted, feed intake process control flow velocity, and preceding 5
The diethanol amine of minute 17.5 parts by weight of investment, reaction temperature promotion are turned down to 140 DEG C, then by material inlet valve, remaining 17.5 weights
Amount part coutroi velocity flows slowly into reaction kettle in 0.5 parts by weight/min, and reaction temperature is controlled at 145 DEG C, and insulation reaction 1 is small
When；
4), by reaction kettle substance titration do acid value detection, to acid value twice after 10 minutes no longer decline until.Acid value
In 153mgKOH/g, start to reduce system temperature to 50 degree；
5), 15 parts by weight Lithium hydroxide monohydrates are slowly put into the reaction kettle of high-speed stirred and is reacted, control temperature exists
50-65 DEG C, reaction 2-3 hours is kept, detection architecture acid value is less than 5mgKOH/g to acid value and no longer declined after 10 minutes,
It can determine whether reaction end；
6), directly discharging is dodecenyl-succinic acid diglycollic amide lithium salts.
Embodiment 3
1), 60 parts by weight dodecenylsuccinic anhydrides are put into preheat in the 100L stainless steel cauldron of heating stirring and are risen
Temperature is to 80 degree；
2), the catalyst A of 0.5 parts by weight (mixture that hexahydropyridine is 1:1 with diethylenetriamine mass ratio) is put into
It is uniformly mixed in the reaction kettle having had been warmed up；
3) it, by 35 parts by weight diethanol amine, slowly puts into reaction kettle and is reacted, feed intake process control flow velocity, and preceding 5
The diethanol amine of minute 17.5 parts by weight of investment, reaction temperature are promoted between 100-105 DEG C, then material inlet valve are turned down, remained
17.5 parts by weight coutroi velocities of remaininging flow slowly into reaction kettle in 0.5 parts by weight/min, and reaction temperature controls the heat preservation at 103 DEG C
Reaction 1 hour；
4), by reaction kettle substance titration do acid value detection, to acid value twice after 10 minutes no longer decline until.Acid value
In 153mg KOH/g, start to reduce system temperature to 50 degree；
5), 10 parts by weight lithium hydroxides are slowly put into the reaction kettle of high-speed stirred and is reacted, control temperature in 50-65
DEG C, reaction 2-3 hours is kept, detection architecture acid value is less than 5mg KOH/g to acid value and no longer declined after 10 minutes
Judge reaction end；
6), directly discharging is dodecenyl-succinic acid diglycollic amide lithium salts.
Embodiment 4
1), 85 parts by weight of intermediate dodecenyl-succinic acid diglycollic amide are put into the reaction kettle of 100L and are warming up to
50℃。
2), 15 parts by weight Lithium hydroxide monohydrates are slowly put into the reaction kettle of high-speed stirred and is reacted, control temperature exists
50-65 DEG C, reaction 2-3 hours is kept, detection architecture acid value is less than 5mg KOH/g to acid value and no longer declined after 10 minutes,
It can determine whether reaction end.
3), directly discharging is dodecenyl-succinic acid diglycollic amide lithium salts.
Embodiment 5
1), 54.6 parts by weight dodecenyl-succinic acids are put into preheat in the 100L stainless steel cauldron of heating stirring and are risen
Temperature is to 110 DEG C；
2), the catalyst of 0.6 parts by weight (mixture that hexahydropyridine and diethylenetriamine mass ratio are 1:1) is put into
It is uniformly mixed in preheated good reaction kettle.
3) it, by 33.4 parts by weight diethanol amine, puts into reaction kettle and is reacted, reaction temperature is promoted to 140-150
Between degree, reaction temperature is controlled at 145 DEG C, insulation reaction 2 hours.Decompression discharge moisture
4), by reaction kettle substance titration do acid value detection, to acid value twice after 10 minutes no longer decline until.Acid value
In 148mgKOH/g, start to reduce system temperature to 50 DEG C.
5), 11.4 parts by weight Lithium hydroxide monohydrates are slowly put into the reaction kettle of high-speed stirred and is reacted, control temperature
At 50-65 DEG C, keep reaction 2-3 hour, detection architecture acid value, to acid value less than 5mgKOH/g, and after 10 minutes no longer under
Drop, that is, can determine whether reaction end；
6), directly discharging is dodecenyl-succinic acid diglycollic amide lithium salts.
Embodiment 6: cast-iron scrap rust prevention test
1, laboratory apparatus and drug: culture dish, the filter paper of diameter 70mm, scale buret cast-iron scrap GG25；
2, antirust experiment is carried out using practical application concentration, it is therefore desirable to embodiment and comparative example are first prepared into concentrate
It is being diluted to working solution progress afterwards；The concentrate liquid of embodiment and comparative example is prepared, component is as follows:
1 embodiment and comparative example antirust concentrate of table
| Content (wt%) | Embodiment 1 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Sebacic acid | Triethanolamine | Water |
| Concentrate A | 5% | 4% | 20% | Surplus | ||||
| Concentrate B | 5% | 4% | 20% | Surplus | ||||
| Concentrate C | 5% | 4% | 20% | Surplus | ||||
| Concentrate D | 5% | 4% | 20% | Surplus | ||||
| Concentrate E | 5% | 4% | 20% | Surplus |
After preparing concentrate, then with the water of 98wt% the concentrate of 2wt% is diluted to 2% working solution, mark respectively
It is denoted as working solution A~E；The concentrate of 5wt% is diluted to the water of 95wt% 5% working solution, is respectively labeled as working solution A
~E；
Wherein, comparative example 1 is common ferrous metal antirust agent triethanolamine borate (commercially available)；Comparative example 2 is common water
Property lubricating and antirust agent oleic diethanola mide borate ester (commercially available)；Comparative example 3 is to commonly use aqueous extreme-pressure lubricant oleic acid diethanol
Amidophosphoric acid ester (commercially available)；Comparative example 4 is to commonly use aqueous extreme pressure agent alcohol ether phosphate (commercially available)；Since embodiment 1-5 is to use
Distinct methods prepare same compound, therefore the effect of embodiment 1-5 is similar, therefore, embodiment 1 have only been used to do this test.
3, it tests process: filter paper being taken to be put into culture dish, weigh GG25 cast-iron scrap 2g ± 0.1g, intersperse among on filter paper, move
Each 2ml of working solution for taking step 2 to configure, soaks all iron filings, covers culture dish and (be usually no more than within 2 hours at 18-28 DEG C
10 minutes 2 hours), cast-iron scrap is removed, is rinsed with tap water, filter paper soaks 5s in acetone solution, and room temperature (18 DEG C -28 DEG C) is naturally dry
It is dry.
3, result judges.
The rust grade of 1 rust prevention test of table
| Rust grade | Meaning | Result is observed on filter paper |
| 0 | Non-corroding | Without rust spot. |
| 1 | Micro corrosion | Most 3 rust spots, and without the rust spot for being greater than 1 square millimeter. |
| 2 | Slight corrosion | Area is corroded less than 1 part, but more than the rust spot than 1 grade or big. |
| 3 | Medium corrosion | Area 1-5 parts of corrosion. |
| 4 | Serious corrosion | It corrodes area and is greater than 5 parts. |
2 cast-iron scrap rust-preventing characteristic of table tests final result comparison
As shown in table 2, rust-preventing characteristic test result illustrates: the rust-proof effect of working solution A (embodiment 1) is best, rustless property
Fortunately than commercially available antirust agent (working solution B and C), commercially available lubricant and extreme pressure agent are substantially without rust-proof effect.
7 extreme pressure test of embodiment
Using the extreme pressure property of the concentrate A-E in tetra-ball machine test method (GB/T3142 and SH/T0204) measurement embodiment 6
Energy.Before operation, it is diluted to 5% working solution with the concentrate of the water of 95wt% and 5wt%, is respectively labeled as working solution A~E.
3 embodiment of table is compared with comparative example extreme pressure property
As shown in table 3, the maximum of working solution A (embodiment 1) reaches 126kg without card tooth load (PB), than commercially available extreme pressure
The maximum of agent (working solution D) 80kg and commercially available lubricant (working solution E) 63kg will be high without card tooth load (PB), also much compares city
It is much higher to sell antirust agent (working solution B and C).
In conclusion lithium salt compound provided by the invention not only has good extreme pressure property, also there is brilliant antirust
Property solves the extreme pressure agent of the prior art not environmentally, and the technological deficiency that rust-preventing characteristic, extreme pressure property are bad, lithium provided by the invention
Salt compound is phosphorous, sulphur, chlorine element, not will cause water eutrophication, reduces user because of wastewater treatment bring cost；And
And the compound of the present invention pH is 8~9, within the scope of this pH, most of bacterium is not easy to increase, and can extend use of the invention
Period, it is thus also avoided that because pH it is too low caused by human injury and machine etching problem, therefore, lithium salt compound of the invention can replace
For extreme pressure agent and antirust agent.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (9)
1. a kind of lithium salt compound has structure shown in formula (I) or (II):
The n is 8.
2. a kind of preparation method of lithium salt compound described in claim 1, which comprises the following steps:
Acid compounds are reacted with diethanol amine, obtain product one by step 1；The acid compounds are dodecenyl-succinic acid
Acid anhydride or dodecenyl-succinic acid；
Lithium hydroxide monohydrate is reacted with product one, obtains lithium salt compound by step 2.
3. the preparation method of lithium salt compound according to claim 2, which is characterized in that by weight, the acids
Compound is 50-65 parts；Diethanol amine is 25-35 parts；Lithium hydroxide monohydrate is 10-15 parts.
4. the preparation method of lithium salt compound according to claim 2, which is characterized in that the step 1 is added when reacting
Catalyst, by weight, the catalyst are 0.5-2.5 parts.
5. the preparation method of lithium salt compound according to claim 4, which is characterized in that the catalyst is selected from hexahydro pyrrole
One or both of pyridine, diethylenetriamine；When the catalyst is hexahydropyridine and diethylenetriamine, hexahydropyridine and divinyl
Triamine mass ratio is 1:(0.8-1).
6. the preparation method of lithium salt compound according to claim 2, which is characterized in that the step 1 reaction temperature control
System is at 90-110 DEG C.
7. the preparation method of lithium salt compound according to claim 2, which is characterized in that reaction temperature in the step 2
It is 50-65 DEG C, the reaction time is 2-3 hours.
8. according to the preparation method of lithium salt compound described in claim 2 to 7 any one, which is characterized in that the step
The acid value of product one is 140-170mg KOH/g in one, and the acid value of the lithium salt compound is 0~10mg KOH/g.
9. made from preparation method described in lithium salt compound according to claim 1 and claim 2~8 any one
Application of the lithium salt compound in intermetallic composite coating.
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